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BUZUD CGMs Readings vs. Blood Glucose MetersWhether you're new to BUZUD CGMs or have used it before, it's important to review the product instructions carefully before use. Until you're confident in how BUZUD CGMs performs for you, continue using your blood glucose meter (BG meter) for treatment decisions.Your BG meter will give you one result. If you test again—whether with the same or a different meter—you may get a different value. Meanwhile, your BUZUD CGMs may show a third number. So, how should you interpret these differences?Understanding AccuracyLab-based glucose tests conducted by healthcare professionals are considered more accurate than any at-home device. In clinical studies, both blood glucose meters and BUZUD CGMs are evaluated by comparing their readings to lab results—not to each other.As a result, BUZUD CGMs readings may not match your meter exactly, but they should be close. You can compare them using what’s called the "20 Rule" (also known as the 20/20 rule) to determine how closely they align.What Is the 20 Rule?To apply the 20 Rule:Locate your meter reading in the center column of the chart;The left column (CGMs –) shows the lowest expected CGMs reading;The right column (CGMs +) shows the highest expected CGMs reading.For example, if your meter reading is 5.6 mmol/L (100 mg/dL), then any BUZUD CGMs reading between 4.4 and 6.7 mmol/L (80 to 120 mg/dL) would be considered an acceptable match.Best Practices for Fingerstick TestingTo ensure accurate meter readings:Store your test strips as directed and check expiration dates;Wash your hands with soap and water (not hand sanitizer), dry thoroughly, and then test.Situations That May Cause Temporary MismatchesFirst Day of Sensor Use: Readings from a newly inserted sensor may initially vary more from meter values. Accuracy typically improves within the first 24 hours.Rapid Glucose Changes: During rapid fluctuations, readings may differ because your meter reflects blood glucose levels, while CGMs measure glucose in interstitial fluid, which lags behind slightly. As glucose levels stabilize, readings will better align.Sensor Compression: Pressure on the sensor (e.g., lying on it while sleeping) can affect accuracy. Once the pressure is relieved, readings usually return to normal.When Should You Consider Calibration?Observe your CGMs readings over several hours. If they consistently read higher or lower than your meter and fall outside the 20 Rule, calibration may help.You may also calibrate if your CGMs readings don’t match how you feel, but your meter results do.Calibration GuidelinesBUZUD CGMs does not require routine calibration. Although calibration may bring readings closer to your meter values, it doesn’t always improve accuracy relative to lab standards.If you decide to calibrate:Enter the fingerstick value within 5 minutes of testing;Avoid calibration during a "Sensor self-check" status.How to Manually Use the 20 RuleBUZUD CGMs readings are considered accurate when:If the meter value is ≥ 4.4 mmol/L (80 mg/dL), the CGMs reading is within ±20%;If the meter value is < 4.4 mmol/L (80 mg/dL), the CGMs reading is within ±1.1 mmol/L (20 mg/dL).Important NoteThis information is intended for BUZUD CGMs users. Please consult your healthcare provider or local guidance for specific usage instructions.
BUZUD Continuous Glucose Monitoring systems (CGMs) support manual calibration, but in most cases, calibration is not required for accurate performance. Our systems are designed to provide a seamless experience without the need for fingerstick calibration. Manual calibration is available as an optional feature.When Should You Consider Calibration?If your BUZUD CGM reading differs from a fingerstick blood glucose value by less than 20%, this is considered within the normal range.If the difference falls between 20% and 30%, manual calibration may improve accuracy.Note: Once you initiate manual calibration, the system will continuously adjust future readings based on your input.When Should Calibration Be Avoided?To ensure system stability and avoid potential malfunctions, do not calibrate in the following situations. Incorrect calibration can significantly reduce CGM accuracy and may even result in reading failures or device damage:When the Sensor Is Under PressureIf the sensor site is being compressed by clothing, body position, or external force, glucose values may be temporarily inaccurate. Calibrating under these conditions may cause the system to adjust based on incorrect data, leading to long-term inaccuracy or damage to internal algorithms.During Rapid Glucose ChangesAfter meals, during exercise, or following insulin injections, blood glucose levels may change rapidly. CGM readings have a physiological delay. Calibrating at these times can mislead the system into learning inaccurate trends, potentially causing persistent data distortion or sensor malfunction.When Up or Down Arrows Are DisplayedArrows indicate rapid glucose movement and an unstable state. Calibrating during these moments may result in system errors or device lock-up due to the sensor's inability to reconcile the trend.During Sensor Error MessagesIf the system shows "Sensor self-check" or "No sensor," do not calibrate. The sensor is not in a stable data collection state, and forcing a calibration may corrupt internal calibration parameters or require premature sensor replacement.Frequent or Unnecessary CalibrationBUZUD CGMs are designed with automated calibration mechanisms. Excessive manual input may disrupt internal algorithms, leading to erratic glucose curves, false alerts, or incorrect readings. Only calibrate when absolutely necessary, and preferably under guidance from a healthcare professional.Things to Know Before Calibrating:Wash and dry your hands with soap and water before testing. Avoid alcohol wipes or hand sanitizer, as they may interfere with accuracy.Enter the value within 5 minutes of fingerstick testing to ensure the reading reflects your current glucose level.Only use fingertip blood glucose values. Alternate sites (e.g., forearm) may yield inaccurate results.Acceptable calibration values range from 2.0 to 25.0 mmol/L. Values outside this range will not be accepted.If you receive a "Calibration Failed" message, repeat the fingerstick and try calibrating again.How to Calibrate Your BUZUD CGMUsing the BUZUD App (for models that support calibration):Open the BUZUD App and go to the CGM page.Tap the "Calibrate" button on the screen.Enter the blood glucose value from your fingertip test and follow the on-screen instructions to complete calibration.BUZUD CGMs are built to deliver a convenient and accurate glucose monitoring experience. Unless necessary, we recommend relying on automatic sensor readings without frequent manual adjustments. For any questions, please contact BUZUD support or consult a healthcare professional.
The BUZUD CGM system has not been tested under defibrillation conditions or in patients using pacemakers or implantable cardioverter defibrillators (ICDs). Currently, there is no data to determine whether an electrical shock would affect CGM performance or reliability.If a patient receives a shock, it is recommended to closely observe the performance of the BUZUD CGM. If the CGM readings do not match symptoms or expectations, please perform a blood glucose (BG) check using a standard fingerstick method.Additionally, the pacemaker manufacturer should be consulted to confirm whether the device has been tested for resistance to Bluetooth signals in the 2.4 GHz frequency range, and to see if any specific recommendations or precautions are provided.⚠️ Always follow professional medical advice and the guidance of your device manufacturer when using electronic medical devices together.
Compared to traditional Self-Monitoring of Blood Glucose (SMBG), BUZUD CGM (Continuous Glucose Monitoring) systems provide much more comprehensive and continuous glucose data.For BUZUD CGM users, accuracy is evaluated based on comparisons with traditional fingerstick blood glucose values. However, it’s important to note that fingerstick testing can be affected by various factors such as timing, technique, and consistency during blood collection.In summary, while occasional differences between BUZUD CGM and meter readings may occur, BUZUD CGM offers real-time glucose trends and continuous monitoring, empowering users to manage their glucose more effectively and make informed decisions throughout the day.
BUZUD CGM systems measure glucose levels in the interstitial fluid just beneath your skin, while traditional blood glucose meters measure glucose levels in your capillary blood.Because these measurements come from different body fluids, they often show different numbers due to physiological reasons. The readings are rarely identical.However, if your CGM reading does not match your symptoms, follow these steps:Wash your hands with soap and waterDry them thoroughlyTake a fingerstick using your blood glucose meterIf the meter value aligns with how you feel, use that value to make treatment decisions.For more information about the accuracy of your BUZUD CGM system, please refer to the official documentation or contact customer support.
BUZUD Continuous Glucose Monitoring (CGM) systems provide significantly more insight than traditional Self-Monitoring of Blood Glucose (SMBG). While SMBG offers a single-point reading, BUZUD CGMs deliver continuous, real-time glucose data and trend information throughout the day.The accuracy of BUZUD CGMs is evaluated by comparing sensor readings to fingertip blood glucose measurements. It's important to note that such comparisons depend on proper fingerstick technique and consistent timing, as blood glucose levels can change rapidly.For a deeper understanding of CGM accuracy and comparison methods, please refer to our comprehensive user guide.
Sometimes, you may notice a difference between your BUZUD CGM reading and your fingerstick blood glucose value. Don't worry—this difference is usually temporary and often resolves over time. Here are some common reasons why this may occur:1. First Day of Sensor UseDuring the first 24 hours after inserting a new BUZUD CGM sensor, readings may be less consistent compared to your blood glucose meter. This is normal and should stabilize as the sensor settles.2. Rapid Glucose ChangesWhen your glucose levels are rising or falling quickly, it's harder to compare CGM readings with blood glucose meter results. This is because:Blood glucose meters measure glucose in capillary bloodBUZUD CGM measures glucose in interstitial fluidBlood glucose levels typically change slightly earlier than interstitial fluid glucose. Once your glucose levels stabilize, the readings from both methods should align more closely.3. Pressure on the SensorIf your BUZUD CGM sensor is under pressure—such as when lying on it or if tight clothing presses against it—it may cause inaccurate readings. Once the pressure is relieved, the readings should return to normal.Monitor Trends Over TimeRather than relying on a single reading, monitor your BUZUD CGM values over several hours to better understand the trend and determine the appropriate action.If Your CGM Reading Does Not Match Your SymptomsWash your hands thoroughly with soap and waterDry your hands completelyUse your blood glucose meter to take a fingerstick readingIf the meter value matches your symptoms, use the meter value to make treatment decisionsIf discrepancies continue or worsen, contact BUZUD customer support or your healthcare provider to evaluate your sensor's performance.
There may be times when your BUZUD CGM readings don’t exactly match your blood glucose meter values—but don’t worry. These differences are usually temporary and often resolve over time. Common reasons for this include:1. The first 24 hours of a new sensorWhen a BUZUD CGM sensor is newly inserted, readings may initially vary more from fingerstick results. This is normal. As the sensor stabilizes during the first 24 hours, the readings typically become more consistent with blood glucose measurements.2. Rapid changes in glucose levelsWhen your glucose levels are changing quickly—such as after meals, during exercise, or after insulin—the values from your CGM and blood glucose meter may differ. That’s because CGMs measure glucose in interstitial fluid, while meters measure it directly in blood. Blood glucose usually changes slightly earlier than interstitial glucose, so a time lag is expected. Once your glucose stabilizes, the readings typically align more closely.3. Pressure on the sensorPhysical pressure on the CGM sensor (e.g., from tight clothing or lying on it while sleeping) can temporarily affect the readings. Once the pressure is relieved, the values should return to normal.When should I consider calibrating?If BUZUD CGM readings are consistently higher or lower than your meter and always fall outside the ±20% margin, you may consider calibrating.You should also consider calibration if the CGM and meter readings don’t match, and your symptoms or expectations align more closely with the meter value.To evaluate sensor accuracy over time, observe your BUZUD CGM readings over several hours rather than relying on a single moment.For more information about CGM accuracy and the 20/20 guideline, please refer to our official user guide.
When using a Continuous Glucose Monitoring (CGM) system, users often notice that the readings differ from traditional blood glucose meters (BGMs or fingersticks). Does this mean one is inaccurate? Should you be concerned?This article explores the physiological differences between CGM and BGM, accepted industry accuracy standards, and when calibration or medical follow-up may be necessary.What Does CGM Actually Measure?First, it’s important to understand that CGMs and BGMs measure glucose in different body fluids:DeviceGlucose SourceFluid TypeDelayBGM (fingerstick)Capillary blood glucoseBloodNearly instantaneousCGMInterstitial glucoseFluid under the skin~5–10 minutes delayBecause glucose appears in the interstitial fluid slightly after it appears in the blood, CGM readings often lag behind BGM values—especially during rapid glucose changes such as after meals or during exercise.What Is the Accepted Difference Between CGM and BGM?International regulatory bodies and clinical guidelines define acceptable accuracy thresholds between CGM and BGM readings.Glucose RangeAcceptable DeviationSource< 3.9 mmol/L±1.1 mmol/LISO 15197:2013 / FDA / Dexcom clinical studies≥ 3.9 mmol/L±20%Same as aboveAnother common metric is MARD (Mean Absolute Relative Difference). A MARD below 10–13% is generally considered a high-accuracy CGM system.When Should You Consider Calibration?For CGM systems that support manual calibration (like BUZUD CGM), here’s a general guide:Difference Between CGM and BGMRecommendation< 20%Considered normal; no action needed20–30%Optional calibration may improve accuracy> 30%Use fingerstick for treatment decisions; consult healthcare providerAvoid calibrating your CGM in these conditions to prevent inaccurate adjustments:Within the first 24 hours after sensor insertionDuring periods of rapid glucose changesWhen the sensor is under pressure or improperly placedWhy CGM Trends Matter More Than Single ValuesOne major advantage of CGM systems is not just the point-in-time reading, but the trend information they provide. Trend arrows indicate where your glucose is heading and how quickly it’s changing—helping you make proactive decisions.Even if there is a small numerical difference, the trend gives you much more actionable information for managing diabetes effectively.SummarySituationIs It Normal?What Should You Do?CGM differs from BGM by < 1.1 mmol/L or < 20%YesNo actionDifference is between 20–30%Possibly acceptableOptional calibrationDifference > 30% and symptoms don't matchNot acceptableUse BGM, contact provider if neededUnderstanding the physiological and technical context of CGM accuracy helps you interpret readings more confidently and use your CGM as a reliable tool in your diabetes management.ReferencesISO 15197:2013. In vitro diagnostic test systems — Requirements for blood-glucose monitoring systems for self-testing in managing diabetes mellitus. https://www.iso.org/standard/54976.htmlU.S. Food and Drug Administration (FDA). Non-Invasive Continuous Glucose Monitoring Devices Guidance. https://www.fda.gov/media/106179/downloadChristiansen MP, et al. Accuracy of a Fourth-Generation Subcutaneous Continuous Glucose Sensor. J Diabetes Sci Technol. 2017;11(3):567–573. https://pubmed.ncbi.nlm.nih.gov/28745074/Clarke WL, et al. Evaluating Clinical Accuracy of Systems for Self-Monitoring of Blood Glucose. Diabetes Care. 1987.Kovatchev BP, et al. Evaluation of a New Measure of Blood Glucose Variability in Diabetes. Diabetes Care. 2006.
